OTF
OpenType Font
OpenType is a cross-platform font format jointly developed by Adobe and Microsoft, first published in 1997 and standardized as ISO/IEC 14496-22. OTF fonts can contain either PostScript (CFF) or TrueType outlines and add a rich set of typographic features such as small caps, ligatures, swashes, and contextual alternates via the GPOS/GSUB tables. Because a single OTF file works on Windows, macOS, and Linux, it largely replaced the separate Windows and Mac versions of Type 1 and TrueType fonts.
| File extensions | .otf |
| MIME type | font/otf |
| Developer | Adobe and Microsoft |
| First released | 1997 |
| Category | Other |
| Open standard | Yes |
What opens OTF files
- All modern operating systems (installed font)
- Adobe Creative Cloud apps
- Any font management utility (e.g., FontExplorer X)
Browse File Formats
Reference details for 53 file formats — extensions, MIME types, what opens each one, and how they convert.
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